This model is a base head model for modellers and other purpose to speed up your projects. Signature images are just to show the topology of model. Our aim is to provide you low poly model only and this doesn't including render of model. You can render it yourself using your own rendering and material skill.
We are not including any material and texture to this model. We also not including any rendering prediction related to signature images. Signature images are developed by third party plugins to show the topology of model.
This model is including unwrapped uvs. More related information is in 3D model specification on right side column.